Paleontologists for decades debated whether meat-eating dinosaur Nanotyrannus was actually just a juvenile Tyrannosaurus.

Learn how a new aging method confirmed Nanotyrannus was a distinct species — not a young Tyrannosaurus rex.

There's a new dinosaur species on the block. An international team, including a biologist from Penn State Lehigh Valley, ...

A full Edmontosaurus fossil is an exciting discovery. The animal stood up to 40 feet tall, as big as a Tyrannosaurus rex, with a duck-billed head and hundreds of teeth to eat vegetation.

For decades, paleontologists argued over the lone skull used to establish the distinct species Nanotyrannus. Was it truly a ...

In 2011, Chilean scientists exploring Antarctica found a strange, deflated, football-shaped object on Seymour Island and took ...